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Finding the Fourth Proportional to 122,318.44, 168,799.75 and 71,366.20

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Solution

The fourth proportional to 122,318.44, 168,799.75 and 71,366.20 is: 98,485.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,318.44 : 168,799.75 = 71,366.20 : x
  2. Step 2: Convert to fraction form
    122,318.44/168,799.75 = 71,366.20/x
  3. Step 3: Cross multiply
    122,318.44x = 168,799.75 × 71,366.20
  4. Step 4: Simplify right side
    122,318.44x = 12,046,596,118.04
  5. Step 5: Solve for x
    x = 12,046,596,118.04/122,318.44
  6. Step 6: Final answer
    x = 98,485.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.